3TCN-HD-2Br (5,5’’-Dibromo-4,4’’-bis(2-hexyldecyl)-[2,2’:5’,2’’-terthiophene]-3’-carbonitrile, CAS 2767223-03-8) is a dibrominated terthiophene building block used to make conjugated polymers for organic electronics. It belongs to Ossila's monomer range and is supplied at a purity above 98%, confirmed by 1H NMR in CDCl3, as a yellow oil.
Each of the two outer thiophene rings carries a branched 2-hexyldecyl side chain, while the central ring bears an electron-withdrawing cyano (CN) group. In the resulting polymers, this cyano substituent encourages stronger intermolecular interactions, which helps raise film crystallinity and gives suitable miscibility when the polymer is blended with non-fullerene acceptors (NFAs).
The compound is also known as 3THDCN-2Br and is classed among semiconductor synthesis intermediates for low band gap polymers, OFETs, organic photovoltaics and polymer solar cells. It has been referenced in work on cyano-substituted polythiophene solar cells published in Joule and Advanced Functional Materials (2022).
- Synthesis of cyano-substituted polythiophenes and other low band gap conjugated polymers.
- Development of donor polymers for organic photovoltaics and polymer solar cells blended with non-fullerene acceptors.
- Preparation of semiconducting polymers for organic field-effect transistors (OFETs).
- Research into tuning film crystallinity and blend miscibility in organic semiconductor materials.
| Brand | Ossila |
|---|---|
| CAS number | 2767223-03-8 |
| Molecular formula | C45H69Br2NS3 |
| Purity | > 98% (1H NMR in CDCl3) |
| Category | — |
| Pack sizes | — |
| Physical form | Yellow oil |
| Storage | — |
- Product code: B881
- Full Name: 5,5’’-Dibromo-4,4’’-bis(2-hexyldecyl)-[2,2’:5’,2’’-terthiophene]-3’-carbonitrile
- Molecular Weight: 880.04 g/mol
- Synonyms: 3THDCN-2Br
- Classification / Family: Terthiophene, semiconductor synthesis intermediates, low band gap polymers, OFETs, organic photovoltaics, polymer solar cells
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